Q: My car is still overheating after I replaced the thermostat

asked by on

my Durango is overheating at low rpms but wen I stomp on it or Rev the engine to higher rpms it the temp gauge goes down I replaced the thermostat but it keeps over heating it's not leaking coolant so I don't know what is causing it to over heat

My car has 200000 miles.
My car has an automatic transmission.

Let’s focus in on the fact higher RPMs have an effect on your engine’s cooling system. There is only one main component in the cooling system related to engine speed and that is your water pump. The pump is powered by the drive belt which runs at the same speed as your engine. The water pump pushes the coolant through the engine, and cycles it through the radiator where a majority of the heat transfer (or cooling of the hot coolant) takes place.

The coolant is run through areas in the engine block where it picks up the heat from the combustion happening inside. From there the hot coolant is run through the radiator where its temperature is decreased, and then its ready to pick up more heat from the engine. If the coolant is not cycling through the engine, the cooling system will not work. The water pump can fail, as well as the pulley that drives it. I recommend further inspection of the coolant leak by a professional mechanic at this point.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My car is still overheating after I replaced the thermostat

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have a 1997 dodge ram 1500. It is not getting up to speed and acts like it has no power.

Hi there. Check the fuel pressure on the fuel rail and see if there is at least 30 psi. If the fuel pressure is low, then either the fuel filter is plugged or the fuel pump is not producing enough...

Q: Truck shuts off when i stop before I hit the brake pedal but idles just fine. What can cause that to happen?

Hello. Engine stalling can be caused by many things. A few common causes are issues with the fuel, ignition, or engine management systems. If any of the components to one or more of these systems fails or has an issue...

Q: 05 acura tl automatic will not accelerate and move. rpm going wild and revs. what is the cause?

The first thing to do is to see if the transmission fluid is full? If it is full, then you may have an internal transmission problem and will need further diagnosis to determine the cause by a transmission mechanic like...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...